th::after {
    content: "\f0dc";
    font-family: FontAwesome;
    font-size: 12px;
    color: #808080;
    padding: 4px;
}

th.asc::after {
    content: "\f0de";
    font-family: FontAwesome;
    color: #000;
}

th.desc::after {
    content: "\f0dd";
    font-family: FontAwesome;
    color: #000;
}

.intro::after {
    content: "";
}